In a small bowl whisk together mayonnaise, sweet chili, and sriracha sauces together. Set aside.
Heat oil to 375 degrees in a deep fryer or in a frying pan.
Place cornstarch in a shallow bowl. Gently press shrimps in the cornstarch. Shake off any excess and lay flat on a plate.
Working in batches, cook the shrimp until they are lightly browned – about 5 minutes. Transfer to paper towel lined plate to drain.
Transfer cooked shrimp to a bowl and pour the mayo/ chili/ sriracha sauce on top. Toss gently to coat.
Serve over a plate of lettuce and sliced green onions for color.